added proper indentation for jinja conditionals in reactor template

salt/files/master.d/reactor.conf

 {%- set reactors = salt['pillar.get']('salt:reactor') -%}
 {%- if reactors %}
 reactor:
-{%- for reactor in reactors %}
-{%- for event_tag, reactor_files in reactor.items() %}
+  {%- for reactor in reactors %}
+    {%- for event_tag, reactor_files in reactor.items() %}
   - '{{ event_tag }}'
-{%- for reactor_file in reactor_files %}
+      {%- for reactor_file in reactor_files %}
     - {{ reactor_file }}
-{%- endfor %}
-{%- endfor %}
-{% endfor -%}
+      {%- endfor %}
+    {%- endfor %}
+  {% endfor -%}
 {%- endif -%}